Deep-well pump



sept. 13,1927.'

J. D. LANGDON DEEP WELL PUMP Original Filed Aug gm o. fw t atroz nu,

Patented Sept. 13, 1927.

UNITED STATES l d 1,642,211 PATENT poFrleE.v

JESSE D. LANGDON, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TOv PETROLEUM IA-K vCHINIERY DEVELOPMENT CORPORATION, OF RENO, NEVADA.

DEEP-WELL PUMP.

Original application lcd August 4, 1/926,.Serial No.

The present `invention relates to deep well pumps, and aims to providenovel and improved means for pumpingoil, water or other liquid from adeepl well in a practical and eicient manner, thisapplication being adivision of application Serialy No. 127,099, filed August 42 1926. A s

Another object of, the invention is the provision of a device of thecharacater indicated having a liquid outlet pipe extending down into thewell casing and provisions for alternately creating pressures withinVthecasing below and above atmospheric pressure, with pumping meanscont-rolled by the differences in pressures to force the liquid'upwardly through said pipe.

With ,the foregoing and other objects in view, which' will lbe apparentasthe description proceeds, thev invention resides in the constructionand arrangement of parts, as hereinafter described and claimed, it.being undeistood that changes can be made within the scope of what isclaimed, without departing from the spirit of the"\inventi on.

rlhe invention is illustrated inthe accompanying drawing, wherein thefigure is a vertical section of the apparatus, 'portions being brokenaway and portion shown in elevation. l

. 'In carrying outfthe invention a tubular casing 7, which may'kbecomposed of pipe sections as usual, extends down into\ the well to thestratum containing the oil, water o'r other liquid, and=a liquid .outlet`pipe 10 extends down into-the well within the casing 7 to a point nearthe lowerr end of thecasing, the casing 7 having a head 8 at its upperend through'which the pipe 10 extends. V v d A pipe 34 depends from thehead 8 w1th1n the casing 7 to a point near the lower end thereof, andthe lower portion thereof servesL as a cylinder for a piston 35 movablevertically within said pipe. The piston 35 has a piston plunger 36 of'smaller diameter working-within a cylinder 37 screw-threaded on anddepending from the lower end of the pipe 10. A checkA valve 12 isprovided with- 1n the lower end of the pipe 10 and a similar, valve 39is provided within the upper end portion of the piston plunger 36,permitting the upward flow of liquid but preventing the downward flowthereof. The pipe 34 has stops 40 at its lower end to limit the 127,099.Divided and this application l'ed Murph 31, 1927.. Serial No. 179,908.

downward movement of the piston 35f-and the plunger 38 has a passage oropening extending longitudinally therethrough to establish communicationbetween the cylinder 37 and lower portion of the pipe 34 below thepiston 35.

The steam or pressurefluid supply pipe 18 is connected to the head 8 incommunicatioi with the annular. chamber 46 between the casing 7 and pipe34, and another steam is admitted into the chamber 47 while the steam inthe chamber 46 is pumped therefrom through the pipe y16. As a result,the liquid is' lifted into the chamber 46 and, simultaneously, thepiston 35 is moved downwardly Within the pipe 34 by the steam in thechamber 47. WhenI the piston 35 is moved downwardly liquid willv iiowupwardly through the piston plunger 38 into' the cylinder 37, the valve39 opening upwardly while the valve 12 supports the liquid in the pipe10. Now, by closing the valves 42 and 45 and opening the valves 23 and44, steam is admitted into the chamber 46 while the steam inthe chamber47 .is drawn therefrom. through the pipe 43 to the vacuum pump. Thus,the vacuum within the chamber 47 and pressure within the chamber 46eilective upwardly within the lower portion of the pipe 34 will forcethe piston 35'upwardly, the pressure above and below said piston beingbelow and above atmospheric pressure. Therefore, the liquid inthecylinder 37 above the valve 39 is forced upwardly through the pipe 10past the valve 12. The operation is then repeated as before, and whenthe valves 23 and 44" are closed and the 'valves 42 and 45 opened, thepressure on the piston 35 below and above same will be above and belowatmosphericpressure. In this' way, the piston 35 is movedboth'upwardlyand downwardly bv pressure on opposite sides thereof belowand -above atmospheric pressure working in unison.

With this apparatus there is no substantial loss in heat units so thatthe use of steam will be efficient, and the use of a partial vacuum inwithdrawing the steam from the well will also provide for efficiency.The steam may be condensed and thev water of condensation returned atalmost the boiling point to the boiler so as to -conserve fuel forheating the boiler.; Although the use of steam is preferred, compressedair or other pressure fluid may be used.

Having thus described the invention, what is claimed as new is 1. A deepwell pump comprising a well casing, a liquid outlet pipe and a secondpipe extending downwardly in the casing with a space between said secondpipe and well casing; means for preventing downward flow of liquid insaid outlet pipe, means for admitting pressure fluid into andwithdrawing it from the second pipe and said space, and pumping meansyassociated with said pipes and operable by alternating pressures insaid second pipe and space and having a check valved passagecommunicating with said outlet pipe to force the liquid upwardly in saidoutlet pipe.

2. A deep well pump comprising a well casing, a liquid outlet pipe and asecond pipe extending downwardly in the casing with a space between saidsecond pipe and well casing, means for preventing downward flow ofliquid in said outlet pipe, means for admitting pressure fluid into andwithdrawing it from the second pipe and said space, and a. pistonworking in the second pipe and having a sliding connection with theoutlet pipe to be reciprocated by alternating presicaaa i i,

sures in said second pipe and space and having a check valved passagecommunicating with said outlet pipe to force liquid upwardly in saidoutlet pipe when the piston is reciprocated. l

3. A deep well pump comprising a well casing, a liquid outlet pipe and asecond pipe extending downwardly in the casing with the outlet pipewithin the second pipe and a space between said second pipe and casing,means for preventing downward flow of liquid in said outlet pipe, meansfor admitting pressure fluid into and withdrawing it from the secondpipe and said space, and a piston member working in said second pipe andhaving a slidable connection with said outlet pipe to be reciprocated byalternating pressures in said second pipe and space, said piston memberhaving a check valved passage communicating with said outlet pipe tforce the liquid upwardly in said outlet pipe.

4. A deep well pump comprising a well casing, a liquid outlet pipe and asecond pipe extending downwardly inthe casing with the outlet pipewithin the second pipe and a space between said second pipe and casing,means for preventing downward flow of liquid in said outlet pipe, ymeansfor admitting pressure fluid into and withdrawing it from the secondpipe and said space, said outlet, pipe having a cylinder at its lowerend, and a piston working in the second pipe and having a plungerworking in said cylinder, said plunger having a passage therethrough anda check valve therein to force the liquid upwardly in said outletpipewhen the piston is reciprocated.

ln testimony whereof I hereunto afiix my signature.l

JESSE D. LANGDON.

